CHROMIUM: exynos: keep exynos_plane zpos on disable

Exynos DRM planes are implemented using overlay hardware.  Presently we
reset the overlay zpos back to default every time a plane is disabled.
Don't do this anymore.

Signed-off-by: John Sheu <sheu@chromium.org>
BUG=chromium-os:36991
TEST=local build, run on exynos

Change-Id: I4c3490ef05d1ecdfeea6cbf26f020b9a19ebe764
Reviewed-on: https://gerrit.chromium.org/gerrit/39296
Tested-by: John Sheu <sheu@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Commit-Ready: John Sheu <sheu@chromium.org>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 14834d9140d46b1dafb8371f01f89606c0c8fb53..575bfac3dbe0b5b56ed7264fabb743c315cda026 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -87,7 +87,6 @@ static int exynos_disable_plane(struct drm_plane *plane)
                        exynos_drm_encoder_crtc_disable);
 
        exynos_plane->enabled = false;
-       exynos_plane->overlay.zpos = DEFAULT_ZPOS;
 
        return 0;
 }